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Published on: January 17, 2025
Local ablative therapies and the effect on antitumor immune responses in pancreatic cancer - A review
Suna Erdem1,2, Jayanth Shankara Narayanan1, Mathias Worni3,4,2,5,6
1Moores Cancer Center, University of California San Diego, CA, USA.
Abstract:
Pancreatic ductal adenocarcinoma (PDAC) is a devastating disease, projected to rank as the second most prevalent cause of cancer-related mortality by 2030. Despite significant progress in advances in surgical techniques and chemotherapy protocols, the overall survival (OS) remains to be less than 10 % for all stages combined. In recent years, local ablative techniques have been introduced and utilized as additional therapeutic approaches for locally advanced pancreatic cancer (LAPC), with promising results with respect to local tumor control and OS. In addition to successful cytoreduction, there is emerging evidence that local ablation induces antitumor immune activity that could prevent or even treat distant metastatic tumors. The enhancement of antitumor immune responses could potentially make ablative therapy a therapeutic option for the treatment of metastatic PDAC. In this review, we summarize current ablative techniques used in the management of LAPC and their impact on systemic immune responses.
Insights
Local ablation techniques show promise for treating advanced pancreatic cancer by improving tumor control and survival. These methods may also stimulate the immune system to fight distant tumors.
Area of Science:
- Oncology
- Immunology
- Surgical Oncology
Background:
- Pancreatic ductal adenocarcinoma (PDAC) is a leading cause of cancer mortality with poor survival rates.
- Current treatments offer limited efficacy for advanced stages, necessitating novel therapeutic strategies.
Purpose of the Study:
- To review local ablative techniques for locally advanced pancreatic cancer (LAPC).
- To examine the impact of these techniques on systemic antitumor immune responses.
Main Methods:
- Literature review of current ablative techniques used in LAPC management.
- Analysis of emerging evidence on immune modulation by local ablation.
Main Results:
- Local ablative techniques demonstrate efficacy in local tumor control and improving overall survival (OS) in LAPC.
- Evidence suggests local ablation can induce systemic antitumor immune activity, potentially targeting distant metastases.
Conclusions:
- Local ablation is a promising therapeutic approach for LAPC, enhancing both local control and OS.
- The immunomodulatory effects of ablation may extend its utility to treating metastatic PDAC.
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